William John Stewart
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Millionaire Chess Op 2015 | 10/08/2015 | 2365 | United States |
| I Jorge Duarte IM | 12/10/2010 | 2302 | Argentina |
Most Played Openings as White
| ECO | Opening | Games |
| A04 | Reti opening | 2 games |
| A05 | Reti opening | 2 games |
| C42 | Petrov's defence | 1 games |
| B44 | Sicilian defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A56 | Benoni defence | 1 games |
| A43 | Old Benoni defence | 1 games |
| A16 | English opening | 1 games |
| E12 | Queen's Indian defence | 1 games |
Costa Rica
Male
FIDE ID:

United States
Argentina